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Biological information processing apparatus and operation program product for the same

a technology of biological information and processing apparatus, which is applied in the field of biological information processing apparatus and the same, can solve the problems of affecting the stability of the apparatus, affecting the stability of measurement and arithmetic processing, and many noise components of the acceleration pulse wave, and achieves the effect of stable operation and accurate evaluation valu

Active Publication Date: 2009-07-28
KONICA MINOLTA SENSING INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]It is another object of the present invention to provide a biological information processing apparatus and an operation program product that can ensure stable operation and calculate an accurate evaluation value.

Problems solved by technology

However, the acceleration pulse wave has generally many noise components because it is obtained by taking the second derivative of the pulse wave.
In other words, a slight variation occurring in the pulse wave (or acceleration pulse wave) causes a large error in the evaluation or deviated evaluation value which hinders the stable operation of the apparatus, and hinders the stable measurement and arithmetic processing.
Consequently, the conventional apparatuses unavoidably have the problems that the processing requires much longer time due to the complexity.

Method used

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  • Biological information processing apparatus and operation program product for the same
  • Biological information processing apparatus and operation program product for the same
  • Biological information processing apparatus and operation program product for the same

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first embodiment

[0026]Referring to FIG. 1 showing a configuration of a biological information processing apparatus 1 according to the invention, the biological information processing apparatus 1 comprises a measuring unit 10 which is to be attached to a living body to be measured to obtain biological information (i.e., pulse wave) from the living body, and a main body 20 as serving a main section of the measuring apparatus.

[0027]The measuring unit 10 includes a light emitter 11 and a light receiver 12. The light emitter 11 is a light source which alternately emits to the living body red light R having a wavelength λ1 in a red range and infrared light IR having a wavelength λ2 in the infrared range. The light source may be provided with, for instance, a light emitting diode (LED) capable of emitting red light R having a wavelength λ1 and infrared light IR having a wavelength λ2. Emission of red light R and infrared light IR from the light emitter 11 is controlled by a light controlling circuit provi...

second embodiment

[0066]FIG. 12 is a block diagram showing each function of a controller 29a of a biological information processing apparatus 1a which considers the frequency attenuation. The controller 29a of the biological information processing apparatus 1a differs from the controller 29 of the biological information processing apparatus 1 in that the controller 29a does not include the Fourier transformer 292, and the frequency analyzer 293a differs from the frequency analyzer 293. The other operation sections being given with like numerals are the same as those of the biological information processing apparatus 1, and further description about them is omitted. The frequency analyzer 293a includes a frequency intensity calculator 2932a and a frequency intensity characteristic value calculator 2933a. The frequency intensity calculator 2932a calculates first to third reference frequency intensities p1 to p3 in accordance with Equation (4) (or Equation (3)).

[0067]The frequency intensity calculator ...

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Abstract

A biological information processing apparatus is strong against the noises or disturbances, and can accurately determine an evaluation value or blood vessel age. A pulse wave acquirer acquires pulse wave information of a living body and a frequency analyzer analyzes a pulse wave frequency based on the pulse wave information obtained by the pulse wave acquirer. The characteristic value extractor extracts a characteristic value from pulse wave frequency information obtained by the analysis carried out by the frequency analyzer and a pulse wave property calculator calculates a pulse wave property or blood vessel age based on the characteristic value extracted by the characteristic value extractor.

Description

[0001]This application is based on patent application No. 2005-110278 filed in Japan, the contents of which are hereby incorporated by references.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a biological information processing apparatus for processing or measuring biological information regarding a living body, such as pulse wave, more particularly to a biological information processing apparatus capable of estimating the age of blood vessels, etc. from pulse wave information which is measured, and an operation program product for the processing apparatus.[0004]2. Description of the Related Art[0005]Conventionally, body weight, body fat, etc. are generally measured for health control purposes. Recently, the increasing health-consciousness of people causes a need to better understand the functional state of the circulatory system, especially the functional state of blood vessels and the blood flow, not just the blood pressure. In th...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61B5/00
CPCA61B5/02007A61B5/024A61B5/7239A61B5/7257
Inventor FUJIWARA, KOJIOJIMA, TAKANOBUNORITA, TOSHIONAGAI, YOSHIROH
Owner KONICA MINOLTA SENSING INC
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